High Dynamic Range SQUID Readout for Frequency-Domain Multiplexers
作者： M. Kiviranta
DOI: 10.1007/S10909-008-9765-Y
关键词: Frequency domain 、 Multiplexer 、 Bipolar junction transistor 、 Noise (electronics) 、 High dynamic range 、 Optoelectronics 、 Nuclear magnetic resonance 、 Amplifier 、 Signal 、 Physics 、 SQUID
摘要: A 16-SQUID array has been designed and fabricated, which shows 0.12 μΦ0 Hz−1/2 flux noise at 4.2 K. The readout amplifier based on a cryogenic silicon-germanium bipolar transistor employs short-delay negative feedback reaches 7 MHz bandwith for 1 Φ0p-p signal. −1 dB compression is reached approximately amplitude when the signal frequency MHz. In mode anomalously increased to 0.35 Hz−1/2.
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